Hi again,
Beside R_ParseVector()'s possible inconsistent behavior, R's handling of
zero-length named elements does not seem consistent either:
```
> lst <- list()
> lst[[""]] <- 1
> names(lst)
[1] ""
> list("" = 1)
Error: attempt to use zero-length variable name
```
Should the parser be made to
I found the following code comment in `src/main/gram.c`:
```
/* Memory leak
yyparse(), as generated by bison, allocates extra space for the parser
stack using malloc(). Unfortunately this means that there is a memory
leak in case of an R error (long-jump). In principle, we could define
yyoverflo
Hi,
The behavior of
```
SEXP R_ParseVector(SEXP, int, ParseStatus *, SEXP);
```
defined in `src/include/R_ext/Parse.h` appears to be inconsistent depending
on the string to be parsed.
Trying to parse a string such as `"list(''=1+"` sets the
`ParseStatus` to incomplete parsing error but trying to
